Metal degassing in vacuum-chamber of circulating vacuum degasser of JSC EVRAZ NTMK
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Metal degassing in vacuum-chamber of circulating vacuum degasser of JSC EVRAZ NTMK
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| Автор |
Metelkin, A. A.
Sheshukov, O. Yu. Tkachev, A. S. Kovyazin, I. V. Chiglintsev, A. V. Shevchenko, O. I. |
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| Тематика |
CIRCULATING VACUUM DEGASSER
DEGASSING HYDROGEN REMOVAL OUT-OF-FURNACE STEEL TREATMENT RATIONAL PARAMETERS |
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| Описание |
For smelting of high-quality metal for transport purposes, it is necessary to limit the content of harmful impurities in it, including dissolved gases. For example, hydrogen content in the finished product should not exceed more than 2 ppm. In order to obtain low residual hydrogen content in steel in the converter shop of JSC EVRAZ NTMK, the transport metal is processed at circulating vacuuming plants. Circulating vacuum degasser is the last stage of steel processing before casting on continuous casting machine, so it is important to study and improve the technological processes in it. To investigate the physico-chemical processes occurring in this metallurgical unit, a hydrodynamic model of the system circulating vacuum degasser – steel ladle was created. Based on theoretical calculations and experiments conducted on a physical model, the main dependencies between the structural and technological parameters of the metallurgical unit were determined. The resulting equation makes it possible to determine the rate of metal circulation in vacuum chamber depending on gas flow rate supplied to inlet snorkel and its inner diameter at circulating vacuuming plants designed for metal processing in steel ladles with a capacity of 140 – 180 tons. Theoretical calculations were confirmed by practical smelting in a steelmaking unit. It is shown that during the wear of lining of the inlet snorkel vacuum chamber, in order to obtain stable residual hydrogen content, it is necessary to make changes in the technological process of vacuuming. Additionally, rational technological parameters of steel processing at the circulating vacuuming plant were determined on the basis of theoretical calculations. © 2022 National University of Science and Technology MISIS. All rights reserved.
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| Дата |
2024-04-08T11:05:58Z
2024-04-08T11:05:58Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Метелкин, АА, Шешуков, ОЮ, Ткачев, АС, Ковязин, ИВ, Чиглинцев, АВ & Шевченко, ОИ 2022, 'Анализ процесса дегазации металла в вакуум-камере циркуляционного вакууматора в условиях АО «ЕВРАЗ НТМК»', Известия высших учебных заведений. Черная металлургия, Том. 65, № 10, стр. 717-723. https://doi.org/10.17073/0368-0797-2022-10-717-723
Метелкин, А. А., Шешуков, О. Ю., Ткачев, А. С., Ковязин, И. В., Чиглинцев, А. В., & Шевченко, О. И. (2022). Анализ процесса дегазации металла в вакуум-камере циркуляционного вакууматора в условиях АО «ЕВРАЗ НТМК». Известия высших учебных заведений. Черная металлургия, 65(10), 717-723. https://doi.org/10.17073/0368-0797-2022-10-717-723 0368-0797 Final All Open Access; Hybrid Gold Open Access https://fermet.misis.ru/jour/article/download/2415/1718 https://fermet.misis.ru/jour/article/download/2415/1718 http://elar.urfu.ru/handle/10995/131243 49702403 10.17073/0368-0797-2022-10-717-723 85142626039 |
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| Язык |
ru
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
National University of Science and Technology MISIS
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| Источник |
Izvestiya. Ferrous Metallurgy
Izvestiya Ferrous Metallurgy |
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